Broadband amplifier incorporating a circuit device effective to

Details Broadband amplifier incorporating a circuit device effective to Broadband amplifier incorporating a circuit device effective to

1986-12-22

1988-06-14

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including signal feedback means

330255, 330265, 330307, H03F 326

Patent

active

047514744

ABSTRACT:
A broadband amplifier comprising insulated collector vertical pnp transistors, a circuit device effective to improve frequency response, and a final stage comprising a so-called complementary pair formed of an npn transistor and a pnp transistor having emitters connected to each other and to an epitaxial layer n of the insulated collector vertical pnp transistor incorporated in the gain circuit of said amplifiers. The complementary pair afford minimization of the junction parasitic capacitances of the aforesaid vertical pnp transistor.

REFERENCES:
Maillet, "General Purpose Operational Amplifier", IBM Technical Disclosure Bulletin, vol. 21, No. 4, Sep. 1978, pp. 1451, 1452.

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